<template>
  <div>
    <h1>当前求和为:{{$store.state.sum}}</h1>
    <select v-model.number="n">
        <option value="1">1</option>
        <option value="2">2</option>
        <option value="3">3</option>
    </select>
    <button @click="increment">+</button>
    <button @click="decrement">-</button>
    <button @click="incrementOdd">当前求和为奇数再加</button>
    <button @click="incrementWait">等一等再加</button>
  </div>
</template>

<script>
export default {
    name:'Count',
    data(){
        return{
            n:1 //用户选择 
        }
    },
    methods:{
        increment(){
            // this.$store.dispatch('addSum',this.n)
            //action中没有逻辑操作可以考虑直接调用mutations
            this.$store.commit('ADDSUM',this.n)
        },
        decrement(){
            this.$store.dispatch('subSum',this.n)
        },
        incrementOdd(){
            this.$store.dispatch('addOnlySumOdd',this.n)
        },
        incrementWait(){
            this.$store.dispatch('addSumWait', this.n)
        },
    },
    mounted(){
        console.log('Count',this.$store)
    }

}
</script>
<style>
    button{
        margin-left: 5px;
    }
</style>